1) Be a Patient Listener
2) Never Look Bored
3) Wait for Them to Reveal Political Ideas and Agree
4) Wait for Them to Reveal Religious Ideas and Agree
5) Hint at Sex, Don't Follow it up unless the Mark is intrested
6) Never Discuss Illness, Unless Special Concern is Shown
7) Never Pry Into Personal Information
8) Never Boast
9) Never Be Untidy
10) Never Get Drunk.
(Count Victor Lustig, Con Artist, 1937)